I think I might have messed my tank up . My 55ltr nano has been going for the last 3 months other that the initial cycle lasting 6 weeks the parameters had been fine .
I done a couple of things at the weekend. I moved live rock from another nano to this one using drip method. I also added a red ball sponge .
has been up at 4ppm for the last week . Two 25% water changes & very little change .
1. The sponge seems to be going white . Flow is good & so is light . Could the no3
be the issue with that?
2. I take it just keep water changing to reduce the no3
3. Added a new protein skimmer will that help ?
I'm not that experienced with marine just learning the hard way .
Use to do tropical but just love marine
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